Hydrophobisation composition, method for hydrophobisation and substrate
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United States of America Patent
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May 8, 2018
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app pub date -
Aug 19, 2014
filing date -
Aug 19, 2013
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Abstract
A hydrophobisation composition, which includes a hydrophobisation extract obtained by extracting outer bark of birch in an organic and/or polar solvent and which includes at least 30 weight-% betulinol. Also disclosed is a method for hydrophobisation of a surface, which includes steps of applying a layer of hydrophobisation composition containing betulinol on a surface of a substrate, and drying and heat-treating the layer of hydrophobisation composition. A substrate having a surface which is hydrophobised by using the method is also disclosed.
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